Loading and screening apparatus



(K0 Model.) 2 Sheets--Sh eet 1.

W. 0. SHADBOLT' LOADING-AND SCREENING APPARATUS.

No. 577.179. PatentediPeb; 16,- 1897.

INVENTOR:

M By I OM/DMQML; v

' 2 Sheets She et 2.

Patented Feb. 16, 1897.

L O B D A H S (HoJIodeL) 7 LOADING AND SCREENING APPARATUS.

WITNESSES:

UNITED STATES PATENT OFFICE.

WILLIAM OsOAR sIIADBOLT, OF BROOKLYN, NEW YORK. 7 it LOADING AND SCREENING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 577,17 9, dated February 16,1897. Application filed May 19, 1896. Serial No. 592,211. (No model.)

To all whom, it may concern.-

Be it known that I, WILLIAM OSCAR SHAD- BOLT, a citizen of the United States, residing at Brooklyn, Kings county, New York, have invented certain new and useful Improvements in Loading and Screening Apparatuses, of which the following is a specification.

My invention relates to devices for automatically taking up, screening, and loading substances or materials, such as coal, for example, into a truck or wagon; and the object is to provide a wheeled base or carriage, somewhat like the running-gear of a truck, with a motor, a lifting-conveyer, a screen, and a delivering conveyer, the apparatus being adapted to take up coal from the pile 011 the ground in a coal-shed, pass it over a screen, and then again take it up and discharge it into a truck backed up in a convenient position for loading. The apparatus being an entirety and movable on wheels maybe readily shifted to any position for handling the material as easily as a wagon may be moved. The screens are interchangeable to suit different grades of material and are simple fiat, or substantially flat, inclined stationary screens. I

In the accompanying drawings, which illustrate an embodiment of the invention, Figure 1 is a plan of the apparatus. Fig. 2 is a vertical longitudinal section of the same. Fig. 3 is a fragmentary view of a part of the liftin g-conveyer, illustrating another form of the same.

A represents the wheeled base or carriage, on which are mounted the following instrumentalities: a rearwardly-inclined liftingconveyer B, an inclined removable screen 0, a counterbalancin g forwardly-extendin g conveyer D, and a motor E for driving the conveyers.v This motor is situated as shown to preserve the proper balanoein the structure.

I'have shown simple endless chain bucketconveyers, and I may say here that there are many forms of such conveyers in use, and I do not limit myself to any special kind. I prefer to employ some one of the various forms of petroleum or gasolene motors for driving the conveyers. In Fig. 2 the motor is indicated rather diagrammatically. A chain belt 1 from the driving sprocket-pulley 2 of the motor drives the conveyer D, and this conveyer drives the conveyer B through the medium of a chain belt 3 and suitable sprocket-pulleys. These sprocket-chain connections are made to pass over sprocket-wheels that are in operative relation with the adjacent ends of said conveyers, and the said sprocket-wheels are relatively of such size as to allow of a little slower movement in the lifting-conveyer than in the delivery-conveyer, whereby accumulation of the material at the pocket of the latter conveyer is avoided. The conveyer B swings about its upper drum-shaft 4, so that its free end may be raised or lowered at will to adapt it to take up the coal or other material from the pile 50, and this Operation may be eifected through the medium of a sector 5, which is fixed to the conveyer 13 and has a series of holes by which it may be secured to the frame 6 by a pin 7. The material taken up by the conveyer B is discharged at its upper end onto the inclined screen 0, over which it flows, the dust and finer material falling through the screen into a hopper F, which leads it down to any form of receptacle W under the carriage.

Then the material has passed down over the inclined screen, it is caught and taken up by the delivering-conveyer D. This conveyer plays at its lower end in a curved depression or pocket Sin the platform of the carriage A, and the screened material flowing into this pocket is taken up by the conveyer D as fast as it arrives. This latter conveyer carries up and discharges the material into a wagon X of any of various kinds adapted for such work.

The conveyor D is made to swing about its lower drum-shaft 9 and is adapted to be raised 0 or lowered by means of a sector 5 in a manner similar to the lifting-conveyer B, the sector being secured by a pin 7 to the frame 6 The conveyer B, as represented in Fig. 2, is adapted to take up the material at from the ground or the floor, but, if desired, it may have a pocket 10, as seen in Fig. 3, at its lower end, into which the material can be shoveled, the buckets of the conveyer taking the material from this pocket.

My invention is especially adapted for use as a loader for coal where the coal is dumped on the ground in a shed and must be loaded into a wagon. By usinga simple-fiat removable screen the latter maybe readily changed to suit the kind and grade of coal being handied, and by having the entire mechanism of the apparatus, including the motor, mounted on a carriage with wheels like those of a wagon it will be obvious that the apparatus may be as readily shifted from place to place as a common wagon.

I am well aware that it is not new to pr0- vide a dredging-boat with an elevator to take up sand and deposit it on a screen for wash ing and another elevator to raise the washed sand above the water-level and deliver it. This I do not claim. My apparatus is carried on running-gears in all respects similar to a wagon and is counterbalanced thereon and adapted for adjustment an d reach, as has been described.

Having thus described my invention I claim A loading and screening apparatus for coal, comprising a wagon to transport the same over uneven ground or surfaces without shock or displacement, a series of conveyers consisting of a rearwardly-inclined lifting-conveyer and a counterbalaneing, forwardly-extending delivery-conveyer, an inclined screen between and connecting said conveyers, the adjacent ends of the latter being mounted on journals in different horizontal planes and the conveyers so disposed that they are adapted to swing about said journals in a manner to obtain the greatest possible reach, means for rigidly securin g both of said conveyers in position, and a motor connected with said conveyers for driving them, said motor being situated on the wagon in position to preserve the proper balance of the structure and conneeted with the conveyors in the manner shown whereby the latter are left free for independent adjustment, as set forth.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

'WILLIAM OSCAR SHADBOLT.

\Vitnesses:

PETER A. Ross, IIENRY CONNETT. 

